Polyphenylene ether molding compositions that include an alkenyl aromatic resin, an ethylene propylene rubber and a triaryl phosphate

Claim 2

A thermoplastic molding composition which consists essentially of: (a) a polyphenylene ether resin; (b) an ethylene propylene rubber; and (c) a component selected from the group consisting of: (i) a triaryl phosphate; (ii) an EPDM modified alkenyl aromatic resin; and (iii) a combination of (i) and (ii).

Claim 3

A thermoplastic molding composition as defined in claim 1 wherein the polyphenylene ether resin has units of the formula: ##STR6## wherein Q is selected from the group consisting of hydrogen, hydrocarbon radicals, halohydrocarbon radicals having at least two carbon atoms between the halogen atom and the phenyl nucleus, hydrocarbonoxy radicals and halohydrocarbonoxy radicals having at least two carbon atoms between the halogen atom and the phenyl nucleus, Q' and Q" are the same as Q and in addition halogen with the proviso that Q and Q' are both free of a tertiary carbon atom and n is an integer of at least 50.

Claim 4

A thermoplastic molding composition as defined in claim 2 wherein the EPDM modified alkenyl aromatic resin has at least 25% of its units derived from an alkenyl aromatic monomer of the formula: ##STR7## wherein R 1 and R 2 are selected from the group consisting of hydrogen and lower alkyl or alkenyl groups of from 1 to 6 carbon atoms; R 3 , R 4 and R 5 are selected from the group consisting of chloro, bromo, hydrogen and lower alkyl groups of from 1 to 6 carbon atoms; and R 6 and R 7 may be concatenated with hydrocarbyl groups to form a naphthyl group.

Claim 5

A thermoplastic molding composition as defined in claim 3 wherein the alkenyl aromatic monomer is styrene.

Claim 6

A thermoplastic molding composition as defined in claim 4 wherein the EPDM rubber is ethylene propylene 5-ethylidene-2-norbornene rubber.

Claim 7

A thermoplastic molding composition as defined in claim 5 wherein the polyphenylene ether resin is poly(2,6-dimethyl-1,4-phenylene) ether resin.

Claim 8

A thermoplastic molding composition as defined in claim 1 wherein component (c) is triphenyl phosphate.

Claim 9

A thermoplastic molding composition which consists essentially of: (a) poly(2,6-dimethyl-1,4-phenylene) ether resin; (b) an ethylene propylene rubber; and (c) a component selected from the group consisting of: (i) a triaryl phosphate; (ii) an EPDM modified alkenyl aromatic resin; (iii) a combination of (i) and (ii).

Claim 10

A thermoplastic molding composition which consists essentially of: (a) poly(2,6-dimethyl-1,4-phenylene) ether resin; (b) an ethylene propylene rubber; and (c) a component selected from the group consisting of: (i) a triaryl phosphate; (ii) an EPDM modified alkenyl aromatic resin; (iii) a combination of (i) and (ii).

Claim 11

A thermoplastic molding composition as defined in claim 8 wherein component (c) consists of a triaryl phosphate.

Claim 12

A thermoplastic molding composition as defined in claim 8 wherein component (c) consists of a triaryl phosphate and an EPDM modified styrene resin.

Claim 13

A thermoplastic molding composition as defined in claim 1 which includes a reinforcing amount of a reinforcing filler.

Claim 14

A thermoplastic molding composition as defined in claim 1 which includes as a further component a flame retardant amount of a flame retardant agent.

Claim 15

A thermoplastic molding composition as defined in claim 11 which includes as a further component a flame retardant amount of a flame retardant.

Claim 16

A thermoplastic molding composition as defined in claim 8 wherein component (c) consists of component (ii).

Claim 17

A thermoplastic molding composition which consists essentially of: (a) from 65 to 95 parts by weight of a polyphenylene ether resin; (b) from 4 to 7 parts by weight of an ethylene propylene rubber; and (c) a component selected from the group consisting of: (i) 5-35 parts by weight of a triaryl phosphate; (ii) 80-20 parts by weight of an EPDM modified alkenyl aromatic resin; and (iii) a combination of (i) and (ii).

Claim 18

A thermoplastic molding composition which consists essentially of: (a) from 65 to 95 parts by weight of a polyphenylene ether resin; (b) from 4 to 7 parts by weight of an ethylene propylene rubber; and (c) a component selected from the group consisting of: (i) 5-35 parts by weight of a triaryl phosphate; (ii) 80-20 parts by weight of an EPDM modified alkenyl aromatic resin; and (iii) a combination of (i) and (ii).

Claim 19

A thermoplastic molding composition as defined in claim 15 wherein the triaryl phosphate is triphenyl phosphate.

Claim 20

A thermoplastic molding composition as defined in claim 15 wherein (c) is triphenyl phosphate.

Claim 21

A thermoplastic molding composition as defined in claim 15 wherein (c) is an EPDM modified alkenyl aromatic resin.

Claim 22

A thermoplastic molding composition as defined in claim 15 wherein the polyphenylene ether resin is a poly(2,6-dimethyl-1,4-phenylene) ether.